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zebra:(1) PTB: 3rd order Petzval blur *U,JQ 只有場曲時(shí),在成像面形成圓斑之尺寸,應(yīng)該是半徑。 Qv5fK 但場曲有正負(fù),此值也可以是正或負(fù)。(2) PTZ: Petzval surface curvature ~